What’s the best unknown product/service for something that is routinely needed/used?

It shocks me how many people I've spoken to who do not even know this is an option. They're whole job is to root through health insurance claims bullshit and billing code nonsense and do the fighting for you to negotiate your bills down to manageable levels.

If you are having claims/coverage issues, and you are insured through an employer, please ask your HR department about contacting an insurance advocate. If you do not have this through work, you can also contact independent services.

It can save you thousands of dollars and a million headaches during times that are already rough.